344 
Atmometer, 162, 164. 
Atmosphere: 159; composition, 59; 
evaporating power, 159-62, 248-50; 
currents in, 161. 
Back-swimmers, 65, 90, 117, 123, 132, 135, 
148, I5I, 155. 
Bacteria: denitrification, 66; nitrifying, 
66; nitrogen-fixing, 66; number and 
age of ponds, 68; number and quantity 
of life, 66; soil, 159. 
Bacteria, scientific names: 
—Azotobacler, 66. 
—Bacterium actino pelte, 66. 
—Clostridium, 66. 
—Nitrobacter, 66. 
—Niutrococcus, 66. 
—Nitrosomonas, 66. 
Badger, 15, 167, 288. 
Balance in nature: 17-18; restored after 
the rise of a pest, 18; after disturbance 
in water, 71. 
Bark beetle: destroyer, 195; habits on 
tamarack, 195; on pine, 228. 
Bass, black: 22, 23; large-mouthed, 70, 
Ti Ssyplibs P20, D205 Ley TAL.  ThO3 
rock, 85, 99, 119; small-mouthed, 85, 
99, II9, 120; warmouth, 130, 142, 
156. 
Bear, black, 14, 15, 201, 237, 245. 
Beaver, 15, 101, 199. 
Beech woods, 158, 242-52. 
Beetles, aquatic: brook, 78, 93, 96, 98, 
IOI, 102, 104, 118, 121, 123; preda- 
ceous diving, 65, 90, 102, 104, 121, 131, 
135, 151; water scavenger, 65, 104, 
Hgts Tibiie, Thay 
Beetles, aquatic, scientific names: 
—A gabus, 9c: 
semtpunctatus, 151. 
—A phodius fimetarius, 185. 
—Chrysomelidae, 132. 
—Coptotomus interrogatus, 135. 
—Cybister fimbriolatus, 149. 
—Dascyllidae, 179, 185. 
—Donacia, 65, 123, 135, 151. 
—Dytiscidae, 65, 102, 104, 131, 151, 185. 
—Elmis, 121: 
fastiditus, 93, 118. 
4-notatus, 123. 
quadrinotatus, 104. 
—Haliplidae, 65. 
—Hydrophilidae, 65, 104, 131, 151, 185. 
—Hydroporus, 90: 
mellitus, 102. 
viltatus, 121. 
—Parnidae, 78, 96, 98, 101, 102. 
ANIMAL COMMUNITIES 
—Psephenus, 78, 96. 
Beetle: bark, 195, 228; boring, 191, 206, 
217, 240; Click, 234, 255, 282, 207; 
ground, 167, 179, 180, 185, 186, 190, 
217, 205, 200, 272.) 243°" ladyvaetog 
293; May, 167, 290; relation to moist- 
ure, 247: snout, 223, 238, 282, 284; 
soldier, 167. 
Beetles, terrestrial, scientific names: 
—Acmaeodera pulchella, 297. 
—Acrapteryx gracilis, 277. 
—Alaus: 
myops, 255- 
oculatus, 253. 
—Allopoda lutea, 207. 
—Amara: 
angustata, 296. 
polita, 204. 
—Anisdactylus inter punctatus, 218. 
—Anthophilax attenuatus, 245. 
—Baris confinis, 204. 
—Bassareus lativittis, 258. 
—Bembidium, 185, 198: 
carinula, 179, 180, 186. 
variegalum, 186. 
—Boletobius cinctus, 261. 
—Boletotherus bifurcus, 244, 261. 
—Brachybamus electus, 204. 
—Buprestidae, 191, 201. 
—Calathus gregarius, 217. 
—Callida punctata, 276, 277. 
—Calligrapha, 267: 
multipunctata, 188, 207. 
scalaris, 241, 260. 
—Cardio phorus cardisce, 255. 
—Cerambycidae, 191, 206, 217, 240. 
—Ceruchus piceus, 253. 
—Chalepus: 
hornit, 188. 
nervosa, 207. 
scapularis, 208. 
—Chelymor pha argus, 277. 
—Chlaenius aestivus, 296. ° 
—Chrysochus auratus, 284, 297. 
—Cicindela: ; 
cuprascens, 180, 186, 219- 
formosa generosa, 225, 226, 252. 
hirticollis, 179, 180, 186, 219, 221, 
aise 
lepida, 40, 120, 223, 252, 316. 
purpurea limbalis, 40, 210, 211, 212, 
213, 254, 302. 
repanda, 181, 186. 
saulcyi, 315. 
scutellaris lecontet, 40, 182, 227, 220, 
230, 252, 316. 
sexguttata, 41, 215, 216, 234, 254, 
256, 316. 
tranquebarica, 182. 
—Cleridae, 194. 
